High pressure gauge cock



Patented Aug. 18, 1931 gru-ifrairr OFFICE JOHN J. GAIN, OIF BAYONNE, NEW JERSY HIGH PRESSURE GAUGE COCK Application filed ctober 6, 192'?. Serial No. 224,331.

, This invention relates to improvements in gauge cocks and that is devices adapted to be applied to steam boilers whereby the level of the water therein may be positively deter- .15 mined.

The principal object of this invention is the provision of such a device which is positive in action, so constructed as to prevent leakage and for that purpose involving a plu- .'"iOrality of valves and seats of different kinds,

each of which valves must be moved positively from its seat.

Another object of this invention is the provision of such a device the major portion of '15 which may be readily removed from the boiler, the remaining part including the valve acting as a check valve to prevent the escape of .steam and water from the boiler or any leakage.

Farther objects of the invention include improvements in details of construction and arrangement whereby a simple and effective `device of this kind is provided, having long li e.

and such other objects as may hereinafter appear, this invention consists in the construction, combination and `arrangement of parts hereinafter described'and then sought to Vbe 50 Vdefined in the appended claims, reference being had to the accompanying drawings forming a part hereor" and which show,merely for the purpose of illustrative disclosure, Va prei'erred embodiment of my invention, it beind ex )ressl understood however that various changes may be made in practice within the scope of the claims without digressing from my inventive idea.

In the drawings- 4.0 Figure 1 isa longitudinal cross section of a device assembled and embodying my invention, the valves all being shown in closed posit-ion.

Figure 2 is 'a view on a reduced scale of the various parts yentering into the construction, most of them being shown' in longitudinal section, the others being shown in perspective. Referring now to the drawings, the numeral 1 designates the body of the device.

To the accomplishment of the foregoingV This body is in the form of a sleeve having'th.D i. internall screw-threaded portion 2 at yone end leading to an enlarged chamber 3, at-the end of which is provided the shoulder 4 and beyond that is provided the reduced chamber 5. A partition 6 is provided at the end et this reduced chamber 5 and this partition 6 is bored as at 7 and provided on its outside with the bevelled valve seat 8. This end ofthe body 1 is provided with the externally screwthreaded stud or projection 9 which is bore"J to provide a chamber or compartment l0.

This chamber or compartment 10 forms a valve receiving and guiding compartment for the valve member 11, which includes the valve proper 12 having a plurality of guiding anJ engaging members 13 around'it adapted to iit and engage the inner walls of the chamber or compartment 10. This valve member is provided with the plunger or rod 14 eXtend-- ing through the bore 7 and through thechainber or compartment 5 into the chamber or compartment 8. At i-ts'other e`nd the valve member is provided rwith the plunger or rod 15. Y f

A nipple member 16 is internally screwthreaded as at 17 to iit the externally threaded stud or projection 9 of the body member 1. This nipple member is provided with ia partition 18 bored as at 19 to receivethe rod or plunger 15 of the valve member. This bore 19 communicates with the chamber or compartment 2O formed within the externally screw-threaded stud or projection k21. This externally threaded stud orpprojection 21 is adapted to be screwed into a boiler or other device andforms the means or method of attachment of the gauge cock in position. Part of the inner surface of the chamber orcompartment 2O is screw-threaded as at 22 to receive the ball -valve holding member 23,- which is in the form of a plug having the squared head 24, a longitudinal bore 25 and ball holding and guiding members 26 to form a basket or cage to hold the ball valve 27 in 95 proper position. The seat for the ball valve 27 is provided at 28 by the end of the .bore 19.

As stated above, the inner surfacel of the body'member 1 is screw-threaded as at2.

This is for the purpose of receiving the screW- i im threaded portion 29 of a bearing sleeve member 30, which is provided with closed end 31 having an aperture or opening 32. On this sleeve member an actuating member 33 is pivotally mounted as at 34 having a spring construction 35 adapted to normally hold the actuating nger 36 in retracted position, stop member' 37 engaging' part of the sleeve 30 to limit the retracting movement. rlie actuating finger 36 is adapted to engage the end of the operating plunger construction now to be described. f

The operating plunger itself is 'designated by the reference character 33 and is in the form of an elongated rod substantially cylindrical in shape except for its forward end 39 which is .slightly and gradually enlarged by `being tapered outwardly, as clearly shown in Figure 2. At its end the plunger member is also bored as at 40 to receive the rod or plunger part 14 of the valve member 11 and the bottom of this bore is adapted to engage the end of this rod to positively move the valve member when the actuating linger 3S engages the end 41 of the plunger member 38, which protrudes through the opening 32 in the sleeve 30. The enlarged end 39 of plunger 38 forms a valve normally seated against the tapered inside surface 42 formed in one end o: the sleeve 43. This end of the sleeve 43 is formed with a channel 44 adapted-to receive split rings 45 in the form of piston rings, so as to form a iiuid tight joint. It

is to be noted 'that the ridge or flange 46 of the channel is formed with its inside face inclined or bevelled as at 47. The plunger member 33 passes through the sleeve 43 and packing material 43 is held in place by means of the washer or collar 49 so as to prevent leakage. A spring member 50 engages the end of the collar or washer 49 and'also engages the split collar 51 mounted in the groove 52 near the end of the plunger 38, whereby the plunger is normally subjected to spring pressure holding the tapered head or end 39 within and on its'tapered seat 42. Ihen, however, the operating member is moved on its pivot and the actuating finger 36 engages the end 41 of the plunger 38 and the pressure of the spring 50 overcome, the valve part 39 of the plunger will be moved off its seat.

lAt the same time the plunger will move the valve member 11 oil' its seat and the plunger 15 thereof will move the ball valve member 27 oli its seat, so that the steam or water within the boiler will pass through the bore 25, bore 19 and bore 7 into the chamber orY compartment 5, and there the pressure against rthe face of sleeve member 43 will move the saine rearwardly against the pressure of the spring 50 until the split rings 45 and the v channel construction 44, which actually form a piston, move across thedischarge opening 53 which leads into the chamber or compartment 3, whereby either steam or water will be discharged from the boiler so that the operator will be able to judge of the height of the water within the boiler.

1When the operating pressure is released from the operating member 33 the spring 50 will return the part-s to their normal? position and the valves 12 and 27 will be forced to their seats by the pressure from the boiler.

In the event it is necessary to take the device down for repair or replacement, the body member is detached from the nipple member 16, leaving that in place, and any necessary repairs or replacements are made. I/Vhenin that condition the ball valve 27 operates as a check valve, being positively held in place by the pressure of the boiler, whereby leakage or escape from the boiler is prevented during the time of repair.

This device is, therefore, one which is posivalves and seats whereby leakage and dripping are prevented, in which the parts may be readily and quickly actuated so as to give a visible indication of the height of the water in the boiler, and in which the parts will readily return to their normal closed position when the operating member is released.

INhat I claim is 1. In a device of the character described including, in combination, a body member in the form of a sleeve and having a valve seat, a valve ineii'ibcr mounted in said body member and hai-'ing a part adapted to it said seat, a nipple member secured to said body member and having a valve and valve seat therein, said iirst-meiitioned valve member having a part adapted to engage said second valve member, a plunger member mounted to move within said body member and adapted to engage said first-mentioned valve member to moveit ofi' its seat, a sleeve member positioned in said body member and 'affording a seat for part of said plunger member and resilient means for normally holding said plunger member on its seat, and

'an operating member adapted to engage said plunger member to move said plunger niember ofi its seat and to operate said other valves as aforesaid.

2, In a device of the character describedl including, in combination, a body member in to move within said body member and adapt- 'i ed to en faire said iirst-mentioned valve memy b b a ber yto move it oil' its seat, a sleeve member positioned in said body member and afforda seat Yfor part of said plunger member 4 l and resilient means for normally holding plunger proper,

. .5 aforesaid, said sleeve member including a piston construction adapted to be moved by boiler pressure when .said valves are orf their seats so as to uncover a discharge opening .c y

Vcluding, incombinatlon, a body member, a

from said body member.

3. A device ofthe character described including, in combination, a body member, a nipple member connected to the body member and adapted to attach said body member to a boiler, avalve positioned in said nipple member, said body member having a discharge orifice, a plurality of valves interposed between said first-mentioned valve and said discharge orifice, means for positively opening certain of said valves and one of said valves being movable under the pressure admitted by said other valves to aord communication 1 with said discharge orifice, whereby a visible indication of the height of the water in the boiler may be obtained through said discharge orifice.

4. A device of the character described including, in combination, a body member, a nipple member connected to the body member and adapted to attachksaid body member to a boiler, a valve positioned in said nipple member, said body member having a discharge orice, a plurality of valves interposed between said first-mentioned valve and said discharge orifice, one of said valves being provided with an 4operating plunger and a bearing sleeve for said plunger mounted in said body member, part of said plunger being adapted to be seated in said sleeve, and an actuating vmember adapted to engage one end of said plunger to move said plunger oit its seat, said plunger engaging one of the other valves'to move it otl' its seat and indirectly movingy the first-mentioned valve off its seat, whereby a visible indication of the height of the water in the boiler is made through said discharge orifice.

' y5. lan .a device of the Ycharacter described including, in combination, a body member, means for attaching thebody member to a boiler, said means having a check valve construction therein, said body member having Ya valve and valve seat therein, said valve being provided with means to engage said check valve construction Vwhen moved,l a

plunger construction in said body member adapted to engage said valve when moved, said plunger construction including a a sleeve withinpwhich said plunger is slidable and .against which part of said plunger fits to form another valve,

-said plunger being provided with a piston head tightly fitting Within said body member, resilient means for normally holding .said plunger and said sleeve in tight engagement, and an actuating member for moving said plunger against' the pressure of said said piston head construction being adaptedy to move when subjected to boiler pressure ,to permit the discharge from the discharge orifice when all the valves are open. 1

6. A device ofthe character described instruction, one of said parts being in the form of a piston fitting saidenlarged compartment .and normally positioned forward of said discharge, orifice, another valve .construction positioned in said body member between the valve in the nipple member and said plunger member and operatively .connected to said plunger member and piston valve in the nipple member, whereby said -va-lves may be opened in unison, and-actuating means for moving said plunger member to open all ,of said valves to admit boilerk i pressure into said` enlarged compartment against said piston to force the piston rearwardly beyond said dischargeorifice topermit a discharge therethrough.

7. yA device of the character described including, yin combination, a body member adapted to be attached to a boiler, said body memberbeing formed with a compartment havinga discharge orifice, a plunger construction positioned in sai-d body member,

said plunger construction being composed of two parts, one fitting within and seating against the other to form a valve and resilient means fork normally holding saidvl valve close-d, one of said partsbeing in the form of a piston tightly fitting in said compartment but movable under pressure to uncover said discharge orifice, andanother valve inand the iront end of said body member having operative connection with said plunger construction, whereby when said plunger construction is actuated both valves ywill be opened, and boiler pressure admitted to said compartment against said piston.

8; A device of the character described including, in combination, a body l member adapted to be attached to a boiler, said body member being Aformed with a compartment having a discharge orifice, a plunger construction positioned in said body f member, said plunger construction being composed of two parts,y one fitting within andl seating against the other to form a valve and resilient means for normally `holding said valve terposed between said plunger construction closed, one of said parts being in the form struction and said boiler,.one of' said valves having an extension in each direction, one of said extensions being adapted to contact with the other valve andthe other of said eXtensions being adapted to contact with said plunger construction, whereby when said plungerconstruction is actuated, all of lsaid valves will be opened and boiler pressure admitted to said compartment against said piston.

9. A device of the character described including, in combination, a body member, a nipple member connected to the front end of the body member having a check valve therein, said body member being formed with a compartment and having a valve member in its forwardV portion controlling communication between said compartment and said nipple member, said valve member having iiieans adapted to contact with said check 'Valve iii the nipple, a sleeve member secured to the rear end of said body member, a plunger :construction movably mounted in said sleeve member, said plunger construction being formed in two parts, one movable within and seating against the other part so as to form a third valveiand also being adapted to engage and move said valve member, the other part of said plunger construction being in the form of a piston tightlyV fitting the inner surface of said compartment and being subjected to boiler pressure when the plunger member is moved sufficiently to open all the said valves, said compartment having a discharge orifice which is exposed when said piston has moved a certain distance.

l0. A device of the character described including, in combination, a body member, a nipple member connected to the front end of the body member having a check valve therein, said body member being formed with a lcompartment and having a valve member in its forward portion controlling communication between said compartment and said nipple member, said valve member having means adapted to contact with said check `,valve in the nipple member, a sleeve member secured to the rear end of said body member,

a lplunger construction inovably mounted in said sleeve member, said plunger construc- 'tion being formed in two parts, one movable within and seating against the other part so as to form a third valve and also being adapted to engage and move said valvemember, the other part ofl said plunger construction .being in the form of a piston tightly fitting the inner surface of said compartment and being subJected to boiler pressure when the plunger construction is moved sufficiently to `discharge of open all the said valves, said compartment -having a discharge orifice which is exposed when said piston-'has moved a certain distance, and resilient means interposed between :the two parts of said plunger construction# to normally hold them .in closed relation and also to resistthe opening movement of said piston. f l1. A high pressure gauge cock, including in combination, a body member, meansi .for attaching the same to a boiler so Vas to afford communication therewith, said body vmember having a discharge orifice, a plurality of alined disconnected valves interposed between said discharge orifice and said 7g@ attaching means, and means for opening certain of said valves to admit duid pressure into said body member to cause the opening of another offsaid valves so as to uncover said charged therefrom to give a visible indication of the condition of the boiler contents.

l2. Ahigh pressure gauge cock, including in combination, a body member adapted to be rdischarge orifice, whereby said fluid is disattached to and communicate with a boiler,9o

said body member having a discharge orifice, a plurality of alined disconnected positively operated valve controlling communication betweenv said Abody member and said boiler,

and a pressure operatedvalve located in said 195 body member forY control-ling the discharge Yof Huid through said discharge orifice.

13. A high pressure gauge cock, including in combination, a body member adapted to be attached to and communicate with a boiler, y Vsaid body member having a discharge orifice,

a plurality of alined disconnected positively operated val-ves controlling communication between said body member and said boilera pressure operated valve located in said body` member for controlling the discharge of fluid through said dischargeorifice, and actuating means adapted to vopen said first-mentioned valves, and said seco-nd-mentionedvalve being slidab'ly mounted with reference to said 11o actuating means.

let. A high pressure gaugev cock, including in combination, Va body member adapted to be attached to and having communication vided witha chamberor compartment and a discharge orifice therefrom, a valve controlling communication between said chamber or. compartment and said boiler, an independent piston valve alined with and dis- 12o and disconnected, and means for positively 125 actuating'said first-mentioned valve to admit boiler pressure to-said` chamber or compartment so as to move said piston valve rto uncover said discharge orifice, whereby a -with a boiler, said body member being pro- V iiuid through said discharge 13e orifice will give a visible indication of the boiler contents.

15. A high pressure gauge cock including in combination a body member having a nipple member at one end adapted to be attached to a boiler, a check valve in the nipple member adapted to prevent steam from normally passing to the body member, a plunger in said body member having a iiared end .and provided With a sleeve provided With a piston and movably mounted on said plunger and means whereby the check valve may be displaced and the piston moved on the plunger so as to allovv the discharge of fluid through a discharge opening in the body member to give a visible indication of the condition of the boiler contents.

16. In a high pressure gauge cock, a plunger formed with a ared end, a sleeve formed with a tapered inside surface mounted on said plunger, piston rings on said sleeve, an abutment at the other end and resilient means for normally keeping the sleeve in engagement with said flared end of the plunger.

17. A high pressure gauge cock, for use 'With boilers or the like, including a main casing, a secondary casing secured to said main casing and having means for connecting same to the boiler, a plurality of alined disconnected valves in the main casing, a ball valve in the secondary casing alined with the first named valves, and means for actuating said iirst named valves and thereby the ball valve to permit the escape of fluid from the boiler, said main casing being separable from said secondary casing Jfor repairs thereto, and said ball valve being operable in a direction to prevent the escape of fluid When the main casing is removed.

In testimony that I claim the foregoing, I have hereunto set my hand this 4th day of October, 1927.

JOHN J. GAIN. 

